Varnish: a costly substance

October 15, 2019 / in article, Stories / by Philip Van Vaerenbergh

VARNISH A COSTLY SUBSTANCE

Have you ever noticed a brown sticky substance on your parts when you opened a hydraulic component ?
This is varnish.

Varnish is an inevitable byproduct of many degradation processes in hydraulic systems. It is caused by the the buildup of insoluble soft contaminant oxidation byproducts. These oxidation byproducts are caused by a combination of water, heat and oxygen. One of the main culprits of this oxidation is excessive heat. The heat is caused by static discharge which occurs throughout the entire hydraulic system, causing the formation of varnish. This static discharge causes very hot sparks which create hot spots in the system, which cooks the oil temporarily, degrading the oil, facilitating it’s decomposition and forming byproducts.

So varnish is formed by oxidation byproducts that overcome the solubility of the oil and due to thermal degradation from system hot spots caused by sparking.

Varnish starts as a sticky soft residue sticking to the metal and so preventing the anti-wear additives in the oil from attaching, thereby increasing wear of the component. Debris get stuck in the sticky varnish, causing the wear.

Varnish usually makes its presence known with poor response from hydraulic valves and by the need to replace filters more often because they are clogging up more frequently and this due to sludge and building up of varnish. All of this causes a reaction in the hydraulic system that results in erroneous operation, increased wear on hydraulic valves, pumps and motors, a shorter lifespan of the hydraulic oil due to higher level of oxidation, less efficient operation and increased downtime. Erratic operation of hydraulic actuators is regularly one of the first signs of varnish build-up. The cylinder will appear to be stuck sometimes, but it is the valve spool in the body that cannot operate freely.

How can we help ?

Our service team has a mobile varnish removal at its disposal, contact us for more information !

Our hydraulic service professional will after a thorough research in cooperation with the client, propose a tailormade solution which will fix your problem and which optimises the condition of your oil and the health of your hydraulic system and thus reducing your downtime.

Next to treating your system with a mobile varnish removal unit, we can install bypassfilters which contract the varnish and keeps it out of your system.

Contact us we’d be glad to help getting your system back in mint condition

For more information regarding our hydraulic field service team click on link below:

https://www.rem-b.com/en/service/

Sources:

HYDRAULICS & PNEUMATICS . Problems and sources of varnish in hydraulic fluid. Lew Lucas (2007) Informa USA, Inc. 2019. [URL :https://www.hydraulicspneumatics.com/200/TechZone/
HydraulicFilter/Article/False/63496/TechZone-HydraulicFilter]
FORCONSTRUCTIONPROS.COM Strategies to vanquish varnish formation. Jim Carroll.May (2014). [URL: https://www.forconstructionpros.com/equipment/fleet-maintenance/article/11386202/how-to-vanquish-varnish-formation-in-hydraulic-systems]
HY-PRO. What Are the Causes of Varnish in Hydraulic Oil? A.Hoeg (2012). Hy-pro filtration.2016. [URL: https://info.hyprofiltration.com/blog/bid/241280/causes-of-varnish-in-hydraulic-oil]

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Check out our new video about hydraulic pump repair on our Youtube channel.

July 26, 2019 / in Stories / by Philip Van Vaerenbergh

Feel free to check out our video about pump repair

In this episode we followed the repair process of a BOSCH REXROTH A10VSO Hydraulic variable open circuit piston pump.

You will see the different steps the pump goes through in the repair process before it is carefully packed and sent back to the customer.

Check out this video about our creative solution to a customer’s need

July 11, 2019 / in News, Stories / by Philip Van Vaerenbergh

We recently received a request from a Belgian precast concrete company to help them with remotely actuating their hydraulic cylinders to open and close the moulds of their concrete pipes. This would save them time in the production process. This was our cup of tea from the start. Our engineers modified a portable cordless ENERPAC hydraulic pump and installed a EATON VICKERS directional valve and a ICARUS RX MINI receiver on it. Want to see the result of this creation, check out the video !

If you got a (hydraulic) problem, give us call and we’re on it !

Best ENERPAC distributor BENELUX FY2018

May 21, 2019 / in News, Stories / by Philip Van Vaerenbergh

REM-B HYDRAULICS has been awarded with being the best ENERPAC distributor BENELUX for the financial year 2018. We would like to thank the whole team for their efforts and performance.

For more info on ENERPAC:

https://www.enerpac.com/

REM-B HYDRAULICS & ETS ARE JOINING FORCES

May 20, 2019 / in News, Stories / by Philip Van Vaerenbergh

REM-B HYDRAULICS from Beerse has joined forces with the American company ENGINEERING TECHNOLOGY SERVICES (ETS) to accelerate growth in the European and global market

ENGINEERING TECHNOLOGY SERVICES (Memphis, USA), a company specialized in repairing and distributing hydraulic components and also the largest brand-independent distributor of original components and spare parts of A-brands (BOSCH REXROTH, PARKER, EATON…) from the United States recently entered into into a partnership and will coöperate more closely.

This joining of forces gives the group a unique opportunity to grow further and to offer a counterweight to counteract the incoming wave of copy parts that flood the European market, mainly from the East. Both REM-B’ s and ETS’ customers will benefit from this collaboration. Clients will be able to find an even wider range of high-quality parts (of A-brands) even faster and this at a very competitive price.

REM-B and ETS have direct access to each other’s stock and can enjoy each other’s know-how and years of experience. Together they can rely on the expertise of 90 driven employees and more than 50 years of experience in the hydraulic service market.

This recent collaboration fits in with the strategy of becoming one of the largest distributors of original hydraulic components and spare parts on the world market.

Currently the Belgian company still owns the majority of the shares. From 2020 the American partner will further increase its participation.

For more information regarding the American partner:

https://www.etshydro.com/

REM.B & ETS entered into a partnership in 2019 with the aim of becoming the largest global supplier of original spare parts and components in the hydraulic service market.

REM-B HYDRAULICS can help you with AVENTICS pneumatic components

February 18, 2019 / in News, Stories / by Philip Van Vaerenbergh

REM-B HYDRAULICS IS AUTHORIZED DISTRIBUTOR OF AVENTICS PNEUMATIC COMPONENTS & SYSTEMS

Aventics is a leading manufacturer of pneumatic components & systems. The pneumatic engineering company provides products and services for industrial automation, food, packaging, medical & energy technology industries. Aventicscompany also develops solutions for the commercial vehicles, marine, and railway technology sectors.

By integrating electronics, the use of state-of-the-art materials, and focusing on machine safety & the “Internet of Things” (Industry 4.0), the German pneumatic specialist, with over 150 years of expertise, is a true pioneer in applied and environmentally-friendly solutions.

Some of you might still know these products under the name of BOSCH REXROTH, but AVENTICS is a standalone company which has been created from new ownership of the former Pneumatics business unit of BOSCH REXROTH.

REM-B HYDRAULICS has been an official authorized distributor for Aventics since 2017. Feel free to consult us for all your pneumatic enquiries.

For more information please feel free to check out the website: aventics.com

For enquiries or more information:

sales@remb.be

or

+32(0)14/62.28.60

REM-B HYDRAULICS has delivered 2 hydraulic powerpacks for use in valve weirs

November 6, 2018 / in News / by Philip Van Vaerenbergh

REM-B HYDRAULICS has recently delivered 2 hydraulic groups that will be used to drive valve weirs in the controlled overflow area Alken-Wellen. A valve weir is intended to influence the water level, whereby the adjustable valve ensures that a different level can be set in different periods.

The project was commissioned by a well-known contractor with a very good reputation in public works and industrial projects.

In close cooperation with the customer, REM-B (from engineering up to and including delivery) has taken care of both the hydraulic groups, the cylinders and the piping. Both hydraulic groups were also equipped with emergency controls (batteries + hand pump), so that the valve weir can still be operated in the event of a power failure.

Hydraulic components were used for the respective groups. Bosch Rexroth & Eaton Vickers, for which REM-B’s extensive stock was available.

REM-B has more than 30 years of experience in selling and repairing hydraulic components as well as in the development and realization of projects. Through a perfect synergy with the customer, we are able to realize a wide range of projects. More information about REM-B can be found at www.rem-b.com

New online configurator for standard build welded hydraulic cylinders.

March 30, 2018 / in News, Stories / by Philip Van Vaerenbergh

REM-B HYDRAULICS launches new online configurator for standard build welded hydraulic cylinders.

Do you require a specific hydraulic welded cylinder ?

REM-B HYDRAULICS now offers the users of it’s online information portal & webshop,REM-B CONNECT, the possibility to use an online cylinder configurator.

This tool allows the user to quickly & easily compose your standard build cylinder and visualize the outcome as you will immediately see a detailed and accurate outline drawing (including the necessary dimensions).

Whether on the go or sitting in your office, this user-friendly online tool delivers immediate access to 2D cylinder drawings & pdf datasheets. Furthermore you will have the possibility to ask for a very specific quote, based on your needs. You can also request a 3-D or CAD Drawing on the same page. These on-demand capabilities eliminate the wait for 2D drawings and cylinder quotations and allow you to work faster and more efficient.

The addition of this online cylinder configurator fits perfectly in REM-B’s philosophy to help its customers in a fast and efficient manner.

Interested ?

Please visit the following webpage and see for yourself:

https://rembcylinders.be